My wish would be an clean sortation by within the criteria.
Let me explain:
If I sort my collection by type and airline, there is often the phenomena, that my 12 Lufthansa A321 aren't listed among each other. They are displayed with gaps which are filled by other airlines.
Further more it would by nice, if you wouldn't make a determination between
A321-100 and A321-200 /
B747-100 and B747-200 
Relating to the mould there are no differences, when we look at these models.